Structure and mechanical properties of poly(trimethylene terephthalate)/poly(hydroxy ether of bisphenol A) blends

González, I.; Eguiazábal, J. I.; Nazábal, J.

doi:10.1002/app.24643

Cited by 36 publications

(45 citation statements)

References 53 publications

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“…However, blends of POE-g-MAH and PA6 are still immiscible. Whereas incorporating a low-modulus elastomer into polyamide usually causes a reduction of the stiffness, a combination of elastomers and fillers for modifying PA has attracted significant attention [13][14][15]. In this way, it is possible to combine the advantages of polymer blends and polymer composites to attain an optimum balance of impact strength and stiffness.…”

Section: Introductionmentioning

confidence: 97%

Organoclay localization in polyamide 6/ethylene-butene copolymer grafted maleic anhydride blends: the effect of different types of organoclay

et al. 2011

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Localization of organoclays between two phases of polyamide 6 (PA6)/maleic anhydride grafted ethylenebutene copolymer (EB-g-MAH) blends, prepared via melt mixing, was investigated as a function of organoclay type. Cloisite 30B, Cloisite 20A and Cloisite 15A were used as different types of organoclay. The influence of different blend compositions and clay contents were also studied. Contact angle measurements have been applied to determine surface tension of components and then to calculate the wetting coefficient which is a useful parameter for prediction of the organoclay location. In general, all organoclays were found to locate in the more hydrophilic polyamide 6 phase. However, for Cloisite 20A and Cloisite 15A transmission electron microscopy (TEM) observations revealed some organoclay layers in the EB-g-MAH phase. Phase structure and nanocomposite morphology were evaluated using scanning and transmission electron microscopy and small angle X-ray scattering (SAXS). Results indicated the formation of an exfoliated or an intercalated morphology in different samples. Dynamic-mechanical thermal analysis and thermal gravimetric analysis were used as an experimental probe to confirm the location of nanoclays predicted via wetting coefficient. The shifting of glass transition temperature for PA6 phase confirmed that nanoclays are more distributed in this phase.

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Section: Introductionmentioning

confidence: 97%

Organoclay localization in polyamide 6/ethylene-butene copolymer grafted maleic anhydride blends: the effect of different types of organoclay

et al. 2011

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“…[5] Interestingly, in the glassy state, the E 0 values of the binary blends are higher than those of PEN, which suggests the occurrence of a synergism in the glassy storage modulus. This may be ascribed not only to the higher total crystallinity of the blends compared to that of both PEN and PTT in the neat state, but also attributed in the literature [24] to a reduction in the specific volume of the system (densification) caused by blending. Subsequent to the glass transition region, the specific volume of the system increases and the E 0 curves lie below that of PEN.…”

Section: Dmta Investigationsmentioning

confidence: 93%

On the Interrelationship of Transreactions with Thermal Properties and Dynamic Mechanical Analysis of PTT/PEN Blends

Jafari

Khonakdar

Asadinezhad

et al. 2009

Macro Chemistry & Physics

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An attempt was made to explore the effects of interchange reactions on the crystallization, melting, and dynamic mechanical behavior of binary blends based on poly(trimethylene terephthalate) (PTT)/poly(ethylene 2,6‐naphthalate) (PEN). 1H NMR spectroscopy is used to verify the occurrence of interchange reactions at the interface, which are increased upon an increase in the melt processing time and temperature. The crystallinity of PTT was reduced while that of PEN was increased on blending. In addition, the crystallization temperatures of both phases showed depression. A single composition‐dependent glass transition temperature (Tg) was detected in the second and subsequent heating thermograms of the blends, which is indicative of miscibility. The cold crystallization of the PTT phase was observed to increase while that of PEN was suppressed on blending. Each phase crystallized individually and a melting point depression was evident, which suggests a certain level of miscibility. Dynamic mechanical thermal analysis corroborated differential scanning calorimetry results. A constructive synergism was observed in the glassy state storage moduli of the blends, which is suggestive of a reduced specific volume of the system because of enhanced interactions and crystallinity.magnified image

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“…5 is shown in Figure 4. These images are covering an area with the surface of 500 Â 500 cm 2 . The dark lines locating around the white circles would be an indication of placing the clay particles in rubber-matrix interfacial region.…”

Section: Characterization Of the Nanostructurementioning

confidence: 99%

“…Previous reports on polymer-layered silicate nanocomposites indicate increased modulus, [1][2][3] impact strength, 1,2,4,5 heat distortion temperature [6][7][8] and barrier properties [9][10][11][12] with decreased thermal expansion coefficient 13 compared with their pristine polymers.…”

Section: Introductionmentioning

confidence: 97%

A systematic study on notched impact strength of super‐toughened polyamide 6 nanocomposites using response surface methodology

Ramezani‐Dakhel

Garmabi

2010

J of Applied Polymer Sci

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Response surface methodology was utilized to optimize the impact strength of polyamide 6 based nanocomposites using three different types of tougheners (ethylene-methyl acrylate, ethylene-ethyl acrylate-maleic anhydride, and hydrogenated butadiene acrylonitrile rubber) at three different levels of clay and rubber. Melt mixing method using a lab scale twin screw extruder was applied to prepare the samples. The wide-angle X-ray diffraction, transmission electron microscopy, and atomic force microscopy results indicated intercalated/exfoliated morphology for all of the prepared nanocomposites. The tensile properties as well as the Izod impact strength of the designed samples were evaluated. Impact resistance was correlated to material variables by using a second order polynomial function. The best balanced mechanical properties, between 15 designed experiments, was achieved using ethylene-ethyl acrylate-maleic anhydride as toughener, 4 wt % of clay and 17.5 wt % of the toughener, whereas 900% improvement in impact strength and 15% enhancement of Young's modulus was obtained compared with pristine polyamide 6 resin. The formulation meeting the simultaneous optimization of Young's modulus and impact strength was proposed based on mathematical quadratic modeling.

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Structure and mechanical properties of poly(trimethylene terephthalate)/poly(hydroxy ether of bisphenol A) blends

Cited by 36 publications

References 53 publications

Organoclay localization in polyamide 6/ethylene-butene copolymer grafted maleic anhydride blends: the effect of different types of organoclay

Organoclay localization in polyamide 6/ethylene-butene copolymer grafted maleic anhydride blends: the effect of different types of organoclay

On the Interrelationship of Transreactions with Thermal Properties and Dynamic Mechanical Analysis of PTT/PEN Blends

A systematic study on notched impact strength of super‐toughened polyamide 6 nanocomposites using response surface methodology

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